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NAT TRAVERSAL

Hello Experts,

I need to know more about NAT transerval as why it is required and if any outside machine needs to connect with internal machines then we can NAT it and allow the ports which are needed so what is main funda of NAT transversal.

Is it allowed by default for some protocols (I am not sure), if yes then would it not a security hole... my mean is here that is it secure by any chance if it gets used.

Please explain.

Thanks.                  

  • LAN Switching and Routing
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